Portable photographic light having an adjustable light chamber



2 8 5 4 2 N A G N W m m R E% N AI R L E F T S U J D A March 13, 1951 PORTABLE PHOTOGRAPHIC LIGHT H 2 Sheets-Sheet 1 Filed 001',- 25, 1946 Inventor March 13, 1951 F v RAHNER 2,545,382

PORTABLE PHOT'OGR'APHIC LIGHT HAVING AN ADJUSTABLE LIGHT CHAMBER Filed Oct. 25, 1946 2 Sheets-Sheet 2 Z l E Z; 24 2 f /FF' f j LEN-7- -f L QLJEL 0 r I Inventor Patented Mar. 13, 1951 A,

UNITED STATES: PATENT, OFFICE PORTABLE PHOTOGRAPHIC LIGHT HAVING AN ADJUSTABLE LIGHT CHAIWBER Francis Victor Rahner, St. Augustine, Fla. Application October 23, 1946, Serial No. 705,067

3 Claims. (01. arc-1.3)

The present invention relates to new and useful improvements in photographic lights to provide a desired illumination of a subject to be photographed and more particularly toa portable light of this character.

An important object of the present invention is toprovidea light of this character including a light chamber adapted for vertical and horizontal adjustment and including interchangeable front panels on the chamber by means of which a telescopic hood may be provided for concentratin the light on the subject, or by means of which various types of light filters, or light modi fying or controlling attachments may be mounted in position at the front of the chamber.

A further object of the invention is to provide a device of this character of simple and practical construction, which provides flexibilty and speed in photographic light-control, and which at the same time is relatively inexpensive to manufacture and otherwise well adapted for the purposes for which the same is intended Other objects and advantages reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to'the accompanying drawings forming part hereof, wherein like numerals refer I to likejjpa'rts throughout, and in which;

Figure '1 is a sideelevational view; Figure 2 is a topplan view of the light cham- Figure 3 is a front 'elevational view with parts U broken away and shown in section;

Figure 4 is a side elevational'view with parts broken away and shown in section;

Figure 5 is an enlarged fragmentary sectional view showing the vertical adjustment for the telescope hood;

Figure 6 is a rear elevational view of movable front panel;

Figure '7 is a top plan view thereof;

the re- Figure 3 is a front elevational view of "a re-" 1 movable panel provided with 'an iris diaphragm;

Figure 9 is a top plan view thereof; Figures 10 to 12 inclusive are views of the aperture reducers for the telescope hood;

Figure 13 is a sectional view taken on line 'l3'-l'3 of Figure 11,-and

the

Figure 14 is a perspective view of a light filter for mounting behind the telescope hood. V

' Referring now to the drawings in detail, where-J in for 'the purpose' "of illustration I have" dis-f closed'a preferredembodiment of the invention, the numeral 5 designates a portablestand of conventional construction and including a vertically 2 adjustable standard 6 having counter-balanced weights- 1 attached thereto and mounted on the upper portion of the stand 5 to secure the stand-- ard 6 in vertically adjusted position; The upper portion of the standard 6 is provided with a horizontally extending arm .8 having a conventional swivelmember 9 at its outer end which is swivelly -connected to the intermediate portion of a transverse brace It secured at the top of a light chamber designated generally at H.

The light chamber includes a frame [2 which is open at its top and the brace I0 is provided with a rod i3rigidly secured longitudinally of the brace with the ends of the rod pivoted in the sides of the frame l2 and provided with wing nuts [4 for securing the light chamber in swingably vertically adjusted position.

A second brace I5 is fixedly secured in the top'of the frame 12 for supporting a lamp socket It at its underside in which a lamp I1 is mounted, the socket having an extension cord l8 extending therefrom for connecting the lamp to a house circuit. v

The light chamber 1 l is provided with a rearwardly sloping open front frame I!) which tapers toward its 'lower portion and provided at its side edges with opposed channel guides 20 in which either of opaque front panels 2| and 22 is interchangeably mounted.

The front panel 2| is provided with a vertically extending oval-shaped opening 23 and with panel guides 24 and 25 on its front and rear surfaces'respectivelyat the side edges of the openingI A stop "26 is secured'tothe rear surface .of the panel 2| below the, opening.

An adjustable telescope hood 2'1 is mounted on a rectangular base 28 which is slidably positioned in the front'guides 25, one edge of the plate having vertically spacednotches 29 therein for selectively receiving the spring projected locking pin 30 slidably mounted in one of the guides 24 to secure the hood 2'! in vertically adjusted position at the front of the light chamber. The outer end of the locking pin is formed with a releasin handle 3| to retract the locking pin when vertically adjusting the plate 28.

A filter frame 32 in which the edges of a filter 33 of any suitable translucent material is secured is slidably received in the guides 25 at its front of which the flange of a standard filter hoop may be secured on the panel, the panel 22 being reversed in the front of the light chamber when the filter hoop is used so that the buttons 35 and hoop will be positioned on the outside of the panel.

The sides of the chamber I l are provided with windows 36 prj suitable translucent: matey and at each sideof herbox rearrectfllfifi 31 swingable on hinges 38 at the rear edge of the door and a triangular shaped door 39 is swingable at its front edge on hinges 40 secured to the sides of the front frameelfi'e, simelted sse of the doors 3'! and 39 are verticaLandnthesfnea edge of the door 39 is overlapped pga ligh seal- .15

ing strip 4! secured to the free edge ofthe door 31.

The rear portion of the bottom of the charn r ber H is closed by a bottom plate 42 having an upstanding flange A3 at its front edge to form an opening 4 l in theb ottom; ct the-chamber; at the front thereof-t Light rays are xcludedefrompassing-through the w dening- 4 1 means of ane upwardly inclined; =--b afile :4 5 secured at; its fr nt edge-to the fron-t of: the chamber -and-*spaeed-= upwardly above the "flange- 43;: andproject ,g-

rearwardfytherefromr A -passageglii isjthuspro videdibetwem the -flange :43 and the bathe-45 m a provide-air circulatiqm means in" the wchamber but toprevent light b in rojectedgiewnwardiy-iw fromithe'chamber.

In--F;i gures 10 ligand -12 I*have illustratedsew: eral forms of aperture; reducers which comprise; e f:5 m d li et ve rr d etes o eh e etmq e in *t ll iee lvl qi edi ngthtzsh siredjcolors he. Pan :22, sptq d ilxr untinaihe. v

0f f til i ti lambsrr or he pan l ,Z'Zm r r e the. ron ier he. l gh hamhe .5 er e;- cure d dfil er r qqnh he e at. of the buttons r h nteeq nsgdesetintiqn aken;i

ni ng im w t the a ompan it believed that a clear unde tandi vice -Wi1rbequite apparen V y p T art. A more detailed "descriptio deemed unnecessary;

4orth irectescaperlight from the-chamber.

Number,

His to be understood, however, that even though there is herein shown and described a preferred embodiment of the invention the same is susceptible to certain changes fully comprehended by the spirit of the invention as herein described and the scope of the appended claims.

I claim:

1 Aphotqgraphic lamp comprising a stand, a horizontal arni atythe upp, rth stand, a lamp chamber, across bar at the top of the chamber pivoted at its'ends to the sides of the chamber for vertical tilting movement of the fnontiofrthe@cbambet,swiv l mea s p in the SIDSSbHIErtO-thfi arm to suspend said chamber beneath said arm for horizantal turning movement of the chamber, a panel removably mflul ztfidz-zahzt egfnontrof the chamber and havingj light gemitting aperture therein, light beam controllingmeans mounted over the aperture, translucent side walls for -the chamber, and 010- sure m-eans "for said side walls comprising sec tional doorsaiorweache side- Wa11 writhi-=. the se'c tions aindependentlyoperativeafm opening nan closing movemenfi 2. A photographic lamp -comprising astandga r horizontalqarm at =theupper end; of -the stand a lamp chamber a-=cross :barat :the top ot.,gthe:.

chambenpi voted at its ends 7 to the sides 'woffi the chamben -for ver tical tilting movement ofv the? front of thechamber, meansconnecting the-cross bar =t0-the arm-for horizontal turning m'ovement of the ch'ambera 7 panel removably imoun ted a the front 0f: the chamber and h aving a light emitting aperture therein, light beam-controh ling J meansgmounted over {the- -aperture lueen-t side walls -for -th'e' chamber swinging-#510 sures -for the side walla; said chambeng having, a-ventilating ppening inthe bottomthgireofianda? baiil'ejor theopenin shieldingtheppenin rom 32" A -photogra phio lamp compr ising a; standga ain eamberl wfite V EEEMP ESL I ED The following references are of IGQQIZdagiIitibhQa fileeofs lstisspatent:.;:v

UNITED r rr re'rsrr -s mamas I 7 2,171,028

whims aggrav te; 

